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27 February, 07:09

Suppose 40 percent of Senegal's population speaks Wolof as a first language. If that's about 5 million people, approximately what is Senegal's population? Express your answer in scientific notation

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  1. 27 February, 10:08
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    5 million = 5*10^6

    40% * x = 5*10^6

    x = (5*10^6) / 0.4 = (5/0.4) * 10^6 = 12.5 * 10^6 = 1.25 * 10^7
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